Improvement in roving-frame



vlliltrll ,Stairs @anni @Mira EUs'ris P. MORGAN, eretico, AND nii/insr H. MCMULLAN, or Bin- D'EFORD, MAlNE.

Leners Manilva. 90,378, daad May 25, 1869.

IIIMIPRO'VIEIMIENTv IN ROVING-FRAME. l

Tho Schedule referred to in these Letters Patent and making part of the name.

To all whom 'it mor/y` concern.-

Be it known that we, EUSTIS P. MORGAN, of Saco, iu-the county of York, and State of Maine, and J AMES H. MCMULLAN, of Biddeford, inthe count?)7 and State aforesaid, have inventedA .a new and useful Improvement in Roving-Frames, for the purpose of preparing cotton for spinning, and we do hereby declare that the following is a full and exact description ofthjecoustrnction 'and operation of the same, reference being had to the accompanyingdrawings, making a partlf this specification.

Similar letters indicate the same parts iii all of the figures. l Figure I is'an end elevation; and

Figure IIis a front view' ofthe mechanism.

Oui" improvement in roving-frames relates mainly to the system of mechanism, herein described, for raising and lowering the bobbins in speeders, extensors, yframes, or slubbing-frames, the motion of the bobbins being vertical, and correspondingin the distance and duration of thetraverse, withthe movements of the bolster-rail.

The preparationof the cotton-roving, from which the yarn or thread is to be spun, requires great care, and

- it is very important that the motion of the bobbin upon:

which the roving is wound be very steady, uniform and free from sudden tremor or vibration when the direction of the motion is changed at each end of the tiaverse. f l l.,

vThe movement of the bolster or traverse-rail has usually been effected by a 4rack and pinion, and also ,by means of cams, pulleys, and chains.

in our invention the whole of the re aired motion is communicated by a' series of curved levers placed at intervals throughout the length oftheil'ame, and having'their centres at oi' near the rear of th'e frame.

By this arrangement of the parts, as her in described, the height of the frame is reduced, the mo -ion is steady and uniform, there are few parts requiring lubrication and adjustment, and the mechanism is simple as compared with the machines heretofore .n.sed.

(gie of the ends of a roving-frame isl represented Attached tothe horizontal bar G, which extends the whole length of the frame, are'the uprights or sanisons B, which are placed at intervals, addaiford support to the fixed rails 0 and D, and to other parts of the mechanism. y l

The curved frame-work F, at the bacled, and its continuation E, near the bottom ofthe machine, are firmly secured to the part G, and to the fixed rails Gland D.

The shaft L, near the bottom of the frame, is driven in the usual manner, by any kind of mechanism that will cause it to rotate backward and forward alternately within fixed limits, this motion being the same,'that is well known and used in all machines of this class.

Afdxed to the shaft Lis the spur-gear K, the teeth of which play into the teeth of the quadrant J, which forms a part of the curved arm or lever H.

This lever has its fulcrum or centre of motion at the stud I, aflixed to the frame F.

The position of the stud inthe slot 3 can be slightly varied, as may be required.

Motion is imparted to the traverse-rail Q, by that part of the forward end of the arm H that is embraced between the point-s marked O and P, the curvature or outline of the upper surface of the arm or lever, at this point, being such as to impart a uniform'vertical motion to the traversing bolster-rail and the bobbin W.

The friction-roller 5 has its bearings in the stand 4, which is bolted to the back of the bolster-rail, while its periphery rests upon the curved part, O P, of the lever.

The lower part of the stand 4 is provided with twc projections, which occupy a position just below a pro jecting Bange or rib formed on the sides of the upper part of the arm H. This is intended'to insure the descent of the rail Q, iu case that any accidental obstruction should prevent the, rail from falling back to its place.

Upon one side of the .samsons B there is a vertiv cal guide-rod or bar N, upon which the ends S S', of i the guide-brace T, traverse. One of the arms'of this 4brace T is bolted to the bolster-rail Q, and the two rear arms S S', slide upon the gu'de-bar N, as before men tioued.

At each end'of the frame there is a vertical guid bar M, which receives the branched ends of the bo ster-rail Q, as4 at 6 and 'l'.

The two guide-bars, M and N, are 'exactly parallel with each other, and serve to give a firm ,and steadyA support to the rail and bobbins, as they move upward and downward.

The flier V occupies a fixed position as to its height, as represented in Fig. I, the roving 8 entering one or' its arms at the top, and issuing at the bottom, 9, where it is wound upon the rising and falling bobbin W.

. Upon the same shaft, L, that carries ,the spur-gear K, there is. a fixed spiral pulley, X, from whichv abanil or chain, 2, passes upward, and then over the fixed pulley Y. It is then attached to the counter-weight il. This weight, Z, falls as the rail rises, holding it very nearly in equilibrium. In some cases it maybe advisable to give the grooves ofthe pulley X, in which the chain runs, anunequal and gradually-increasing depth, in order that the weight Z may' impart a variable amount of force, to correspond with the varying strain on the teeth of the quadrant J and the spur-gear H., as the lever H assumes different positions.

Itis necessary that the bobbin- W be raised and'4 "v ofthe@ 'the bearing-point of the friction-roller 5, is also less when the arm is elevated.

'v The cnrvat'ure at O P will Vary with the length of the arm, the height of the centreI above the motor gear Kand the distance thatrthe bobbin is required Y to rise and fall.

A The shape of the curved part of the arm upon which f the friction-roller '5 rests, as 'shown in Fig. I, is the true curve requiredfor moving the bobbins of a machine of the size and proportions represented in the'drawings.

The number. of spindles .or bobbins ina machine may l be varied at pleasure, asutcient number of arms or levers being placed at intervals, 'parallel with each other, to el'ect the elevation of the bolster-rail.

its centre at I, it is obvious that the verticaly fdistance the point? passes through when the arm starts from its lowest point, is much less than the ver-v tical distance traversed in the same time, when the arm 'is horizontal and the bobbin 'is raised to its highest A`fpoint.'

Y The length of the lever or arm', from the centre I to IH, between the, points O and As the i free end-of `the arm Hmoves in the arc of a circle, having Other forms and arrangement of the counterpoise and grooved spiral pulley, or its equivalent, may bensed for balancing the weight ofthe trasversing or bolsterrail, the action and cl'ect of such devices being alwaysadaptedto and Working in combination With `the main features of our invention,' as herein described.

What We claim, and desire to 'secure by Letters Pattent, is

l. The system or series of curvedlevers, driven by a segment-gear and pinion, o r their equivalents, and having the free or outer end of each lever of such a curve as will impart to the bolster-rail, andthe bobbins supe, ported by it,- a, uniform motion in all positions of the lever. Y i

2'. In combination with the system of levers o'r arms, herein set forth, the spiral pulley X, andthe counterpoise Z, or their equivalents, substantially as herein described, and for the purpose specified.l

' EUSTIS 41E. MORGAN. v[11. s.] JAMES H. MCMULLAN. [1.. 5].

Witnesses:V

CEAS. S. PATTEN, Gno. WM. SQAMMAN. 

